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Patent Searching and Data


Title:
SIGNAL PROCESSING APPARATUS AND ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2019/198392
Kind Code:
A1
Abstract:
Provided is a signal processing apparatus for an electric tool, the signal processing apparatus generating a signal (Stc) for controlling a motor (1) by applying smoothing processing to a torque value signal (St) from a torque sensor (6) of the electric tool by using a filter (22), wherein the signal processing apparatus is provided with a half-width detecting circuit (21) that detects a half width (Bs) of the torque value signal (St), and a computing circuit (23) that performs variable control of a cut-off frequency (fc) of the filter (22) in accordance with the number of hits (H) on the electric tool on the basis of the detected half width of the torque value signal (St).

Inventors:
TANJI, Yusuke
Application Number:
JP2019/009035
Publication Date:
October 17, 2019
Filing Date:
March 07, 2019
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
B25B21/02; B25B21/00; B25B23/14
Foreign References:
JPH11267981A1999-10-05
JP2005174396A2005-06-30
JPS5857676A1983-04-05
US20070119267A12007-05-31
Attorney, Agent or Firm:
YAMAO, Norihito et al. (AOYAMA & PARTNERS, Umeda Hankyu Bldg. Office Tower 8-1, Kakuda-cho, Kita-ku, Osaka-sh, Osaka 17, 〒5300017, JP)
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